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Article Dans Une Revue Phys.Lett.B Année : 2021

Higgs boson self-coupling constraints from single Higgs, double Higgs and Electroweak measurements

Giuseppe Degrassi
  • Fonction : Auteur
Biagio Di Micco
  • Fonction : Auteur
Pier Paolo Giardino
  • Fonction : Auteur

Résumé

We set constraints on the trilinear Higgs boson self-coupling, λ3 , by combining the information coming from the W mass and leptonic effective Weinberg angle, electroweak precision observables, with the single Higgs boson analyses targeting the γγ,ZZ⁎,WW⁎,τ+τ− and b¯b decay channels and the double Higgs boson analyses in the bb¯bb¯,bb¯τ+τ− and bb¯γγ decay channels, performed by the ATLAS collaboration. With the assumption that the new physics affects only the Higgs potential, values outside the interval −1.8λ3SM<λ3<9.2λ3SM are excluded at 95% confidence level. With respect to similar analyses that do not include the information coming from the electroweak precision observables our analysis shows a stronger constraint on both positive and negative values of λ3 .
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Dates et versions

hal-03157102 , version 1 (09-05-2023)

Licence

Paternité - Pas d'utilisation commerciale

Identifiants

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Giuseppe Degrassi, Biagio Di Micco, Pier Paolo Giardino, Eleonora Rossi. Higgs boson self-coupling constraints from single Higgs, double Higgs and Electroweak measurements. Phys.Lett.B, 2021, 817, pp.136307. ⟨10.1016/j.physletb.2021.136307⟩. ⟨hal-03157102⟩
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